Ok. This post pertains to my deisel trike build... So, the Spicer 3053a has no output or anything for a speedometer. It's designed to feed a divorced transfer case and the speedometer is attached to it. I've seen speedometers that work with a magnet on the front wheel. I would really prefer something that would work off the driveshaft. I've seen analog, electric, GPS (not fond of the GPS idea), sending units that I have no idea what goes with what, etc. I'm totally ignorant to universal speedometers so any help that can be provided would be appreciated.